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Minotaur-2 (OSP-TLV)

The OSP (Orbital Suborbital Program) launch vehicles consits of components of retired Minuteman-2 missiles combined with new fabricated
parts to create a low cost launch vehicle for modest orbital missions and sub orbital
target delivery. Common for all versions are the M-55 and SR-19
first and second stages taken from the Minuteman-2.
The Target Launch Vehicle features also a M-57A third stage of the original Minuteman-2 and is called Minotaur-2.
The Satellite Launch Vehicle, also known as Minotaur-1,
uses Orion-50XL and a Orion-38 Motors of Pegasus
heritage as upper stages. Another version was to launch a experimental liquid fueled
upper stage (USFE) on a suborbital trajectory. OSP vehicles are not commercially available